Rib for umbrellas



PATENT AEEICE,

JACOB G. MISSIMER, OF PHILADELPHIA, PENNSYLVANIA.

RIB FOR UMBRELLAS.

SPECIFICATION forming part of Letters Patent 1\l'o.A 605,113, dated June'7, 1898.

y Application filed January 22, 1898. Serial No. 667,552. (No model.)

To a/ZZ whom it may concern:

Be it known that I, JACOB G. MissnvrER, a citizenof the United States,residing in the city and county of Philadelphia, State of. Pennsylvania,have invented a new and useful Improvement in Ribs for Umbrellas, dac.,which improvement is fully set forth in the following specification andaccompanying drawings. l

I-Ieretofore ribs of umbrellas and parasols have been provided with eyeswhich are formed by flattening the ends of the ribs and piercing thesame, said .eyes receiving the wire which connects them with the notchor notched collar on the stick or staff and forms the axis of the ribs;but such eyes and ends rust and corrode, lose their strength, and breakin short order.

My invention is designed to remedy such objectionable features; and itconsists in providing a rib of the character stated with acylindrical-shaped eye formed by bending or turning the rib back onitself, so as to produce the eye, the same being integral with the rib,without being pierced, as heretofore,

'there being a spirally twisted or coiled neck between the eye and bodyof the rib, the saine! corrugating and strengthening said neck, so

that its durability is increased.

Figure l represents a perspectiveview of a portion of an umbrella-ribembodying Vmy in' vention. Fig. 2 represents va side elevation of thesame. v y

Similar letters of reference indicate corresponding parts in thefigures.

Referring to the drawings, A designates a portion of a rib the upperendfof which is turned or twisted, as at B, and the metal turned back onitself, preferably in a curved direction, producing a hollow cylinderwhich constitutes` an eye, as shown at C, the curve extending at a rightangle to the longitudinal direction of therib and being adapted toreceive thejyvirel? which, connects several ribs l'employed lwith thenotch or notched collar in the stick, it being noticed that the metal isnot pierced to form said ,eye and so possesses; increasedjstrength"andgreater durability, and it'a'lso provides a broad bearingsurface on thewire, so that it turns true in its opening and closing motions, and alsopresents enlarged side surfaces which rest freely against the walls ofthe notches of the collar, so that side wabbling of the ribs within saidnotches is prevented.

In the operation of forming the twist B, which constitutes a neckintermediate of the body of the rib and the eye, it deilects the fiberof the metal at the relative place from a right line into a spiral oneor a spiral corrugation and in a measure upsets the metal, thusrendering the same more compact, and consequently produces a neck ofgreat strength and durability.

As a neck is required between the body of the rib and the eye, so thatthe rib may have the greatest freedom of motion in the opening andclosing motions of the umbrella without having the end of said bodycontact with the bearing of the eye, said neck is necessarily formed bythinning out the metal at the end of the body and then bending a por/tion of the same into eye form, leaving a portion unbent, whichconstitutes the neck proper, which portion, per Se, is weak; but the.samejis twisted or converted into a spiral,

whichhas the advantages above stated. v Of course the lower end of whatis known as the. stretcher of an umbrella or parasol may have an eyethereon-constructed simij larly to that hereinbefore described as on theK upper end of a rib, as I consider the invention broad enough toinclude either of said parts of an umbrella-frame, although it moreparticularly refers to a rib.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

A rib of the character stated, having thereon a cylindrical eye, thesame extending at a right angle to the longitudinal direction of therib, and a coiled neck intermediate of said eye and the body of the rib.

WM- C. ungelesen; JOHN .-'A YVSIIEDERsHnn/r.

